POPSO Dihydrate CAS 68189-43-5 Purity >99.0% (Titration) Biological Buffer UltraPure
Shanghai Ruifu Chemical Co., Ltd. is the leading manufacturer and supplier of POPSO Dihydrate (CAS: 68189-43-5) with high quality, commercial production. Ruifu can supply a series of biological buffers, can provide worldwide delivery, small and bulk quantities available, strong after-sale service. Please contact: alvin@ruifuchem.com
Chemical Name | POPSO Dihydrate |
Synonyms | Piperazine-1,4-bis(2-Hydroxypropanesulfonic Acid) Dihydrate; Piperazine-N,N'-bis(2-Hydroxypropanesulfonic Acid) Dihydrate |
CAS Number | 68189-43-5 |
Stock Status | In Stock |
Molecular Formula | C10H22N2O8S2·2H2O |
Molecular Weight | 398.44 |
Melting Point | 320℃ |
Density | 1.578±0.06 g/cm3 |
Absorbance 260nm | <0.15 (1mol/L, 1mol/L NaOH) |
Solubility in 1mol/L NaOH | Almost Transparency |
pKa | 7.8 (at 25℃) |
COA & MSDS | Available |
Origin | Shanghai, China |
Product Categories | Biological Buffers; Good's Buffering Agents |
Brand | Ruifu Chemical |
Item | Specifications |
Appearance | White Crystalline Powder |
Purity / Analysis Method | >99.0% (Titration by NaOH, Calcd. on Anhydrous Basis) |
Water (by Karl Fischer) | <10.0% |
Useful pH Range | 7.2~8.5 |
pKa (at 25℃) | 7.8 |
Solubility (Color) | Colorless |
Solubility (Turbidity) | Clear to Slightly Hazy at 10 g plus 40 ml of 1N NaOH |
Heavy Metals (as Pb) | <5ppm |
Iron (Fe) | <5ppm |
Chloride (Cl) | <0.20% |
Sulfate (SO4) | <0.05% |
Zinc (Zn) | <0.005% |
Sodium (Na) | <0.10% |
Calcium (Ca) | <0.005% |
Copper (Cu) | <0.005% |
Infrared Spectrum | Conforms to Structure |
Shelf Life | 24 Months When Properly Stored |
Test Standard | Enterprise Standard |
Usage | Biological Buffer; Good's Buffer Component for Biological Research |
Package: Bottle, Aluminium foil bag, 25kg/Cardboard Drum, or according to customer's requirement.
Storage Condition: Keep the container tightly closed and store in a cool, dry and well-ventilated warehouse away from incompatible substances. Protect from light and moisture. Keep away from fire and heat source.
Shipping: Deliver to worldwide by air, by FedEx / DHL Express. Provide fast and reliable delivery.
Hazard Symbols T - Toxic
Risk Codes R21 - Harmful in contact with skin
R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed.
R25 - Toxic if swallowed
R36/37/38 - Irritating to eyes, respiratory system and skin.
Safety Description S22 - Do not breathe dust.
S24/25 - Avoid contact with skin and eyes.
S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection.
S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany 3
HS Code 2934999099
Hazard Class IRRITANT
POPSO Dihydrate (CAS: 68189-43-5) is a zwitterionic biological buffer, often used as a buffering agent in biological and biochemical research. POPSO Dihydrate buffer is prepared by adding NaOH to a solution of free acid. POPSO is categorized as a Good's buffer. POPSO buffer is partly degraded on autoclaving. Used to prepare a stain for rapid reversible detection of protein bands on cellulose acetate membranes. Used for staining proteins after electrophoresis.